class_docstr: Tests correctness of the power transformation.
code: def testScalarCongruency(self):
      bijector = power_transform.PowerTransform(
          power=0.2, validate_args=True
      )
      bijector_test_util.assert_scalar_congruency(
          bijector,
          lower_x=-2.0,
          upper_x=1.5,
          eval_func=self.evaluate,
          rtol=0.05,
      )
  
file_path: probability/tensorflow_probability/python/bijectors/power_transform_test.py
imports: import numpy
  from tensorflow_probability.python.bijectors import bijector_test_util
  from tensorflow_probability.python.bijectors import power_transform
  from tensorflow_probability.python.internal import test_util
label_desc: Use image node_id 2 for calling the PowerTransformBijectorTest obj's underlying member method code with example usage: obj.testScalarCongruency() without return types